Knife-wiper.



No. 832,661. PATBNTED OCT. 9, 1906.

R. J. FOSTER.

KNIFE WIPER.

APPLICATION FILED MAY 5, 1906.

UNITED STATES ZATENT OFFICE.

ROBERT JOHN FOSTER, OF MONTREAL, QUEBEC, CANADA, ASSIGNOR T0 MERGENTHALER LINOTYPE COMPANY, A CORPORATION OF NEW YORK.

KNIFE-WIPER.

Specification of Letters Patent.

Patented Oct. 9, 1906.

To aZZ whom it may concern:

Be it known that 1, ROBERT JOHN FOSTER, of the city of Montreal, Province of Quebec, Dominion of Canada, have invented a new and useful Improvement in Knife-Wipers, of which the following is a specification.

My invention has reference to linotypemachines, wherein slugs or linotypes'are cast in a solid mold mounted in a vertical intermittingly-rotating wheel, by which a slug is presented in front of an ejector, by which it is delivered edgewise from the mold between two parallel trimming-knives In practice it 18 found that the shavings from the hot slug have a tendency to adhere to the edges of the trimming-knives, so that unless removed they are liable to become attiiched to the type-faces of the succeeding s ugs.

' My invention has in view the removal of these shavings from the knives after each shaving or trimming action; and to this end it consists in a yielding spring-supported wiper carried by the mold-supporting wheel in such a manner as to traverse the edges of the knives. I am aware that both reciprocating wipers mounted in the main frame and a brush attached to the mold-wheel have been used for this purpose; but in practice these constructions are found to be open to certain objections, which are overcome by the constructionherein shown and claimed.

Referring to the accompanying drawings, Figure 1 represents a face view of the moldcarrying wheel having my knife-wiper attached. Fig. 2 is a cross-section on the line 2 2 of the preceding figure. Fig. 3 is a section through the mold-wheel knives with the wiper in operative position.

In the drawings, A represents the vertical intermittingly-rotating mold-wheel, containing the usual slotted mold B, which stands in a horizontal position during the casting action.

0 and O are two vertical knives fixed to the frame, the space between them being equal to the thickness of the required slug.

D is a horizontal ejector mounted in guides in the main frame directly opposite the space between the knives.

After the casting action the mold-wheel is turned until it presents the mold in a vertical position with the contained slug in front of the ejector D, which then advances, expelling the slug from the mold and driving it forward between the knives C 0 into the receiving-galley, as usual.

E represents my improved wiper, designed to remove the metal chips or shavings from the knives C O It consists of a flat sheet of leather, felt, or equivalent material e, secured firmly at one edge in a clip or holder 6, ha ving pivots 6 mounted in ears on a plate 6 which is screwed or otherwise firmly secured to the face of the mold-wheel A. A spring e, seated at its ends on elevated surfaces on the plate e extends behind or beneath the clip 0, which is constructed with eccentric surfaces 6 to bear thereon. This spring holds the wiper or pad 6 normally'outward in such manner that when the mold-wheel is turned to carry the mold from the ejecting position the wiper will be carried lengthwise over the edges of the knives C C in such manner as to remove any adhering chips or shavings. The spring admits of the wiper yielding or turning backward and causes it to act with gentle pressure upon the knives and also admits of its yielding and turning backward and downward toward the disk in the event of its encountering any obstruction in the course of its travel. The pivotal yielding action of the wiper compensates for any change in its length due to wear or other causes, and this insures under all circumstances the proper action of the wiper in relation to the knives.

While I prefer to retain the details of construction herein shown, it is understood that the essence of the invention lies in pivoting or otherwise mounting the wiper so that it may yield against the resistance of a spring tending to hold it at any operative position, and it is manifest that the details of the wiper, the clip, and the spring may be widely modified, provided this mode of action is retained.

Having described my invention, what I claim is 1. In a linotype-machine, and in combination with the slug-trimming knives and the rotary mold-carrying disk, a knife-wiper pivoted to the disk, and a spring tending to hold the wiper outward from the disk.

2. In a linotype-machine and in combination with a mold-carrier and slug-trimming knives, a knife-wiper secured to the moldspring tending to hold the wiper in its outer 1o carrier and comprising a base-plate, a Wiper posltion.

of soft material pivoted thereto, and a spring In testimony whereof I hereunto set my tending to urge the Wiper outward toward hand, this 2d day of May, 1906, in the presthe knives. ence of two attesting witnesses.

3. Aknife-Wiping attachment for linotype- ROBERT JOHN FOSTER. machines comprising a base-plate, a clip piv- Witnesses: oted thereto and projecting at right angles 0. MAUDE Ross, therefrom, a wiper secured in the clip, and a S. A. PULLAM. 

